function [x,y,s] = mask(a,idx,orient,vals)

x = cell(11,1);
y = cell(11,1);
s = cell(11,1);

x{1} = [0 1 1 0 0];
y{1} = [0 0 1 1 0];
s{1} = 'k';

x{2} = [0.1 0.1 0.3 0.3];
y{2} = [1 1.1 1.1 1];
s{2} = 'k';

x{3} = [0.9 0.9 0.7 0.7];
y{3} = [1 1.1 1.1 1];
s{3} = 'k';

x{4} = [0.85 0.75];
y{4} = [0.85 0.85];
s{4} = 'y';

x{5} = [0.15 0.25];
y{5} = [0.85 0.85];
s{5} = 'y';

x{6} = [0.8 0.8];
y{6} = [0.8 0.9];
s{6} = 'y';

x{7} = [0.85 0.65 0.65 0.85 0.85];
y{7} = [0.3 0.3 0.7 0.7 0.3];
s{7} = 'b';

x{8} = [0.15 0.15];
y{8} = [0.3 0.7];
s{8} = 'b';

x{9} = [0.35 0.35];
y{9} = [0.3 0.7];
s{9} = 'b';

x{10} = [0.15 0.35];
y{10} = [0.5 0.5];
s{10} = 'b';

x{11} = [0.55 0.45 0.45 0.55 0.55 0.45];
y{11} = [0.15 0.15 0.25 0.25 0.35 0.35];
s{11} = 'b';
